/*
 * Copyright 2017 HugeGraph Authors
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with this
 * work for additional information regarding copyright ownership. The ASF
 * licenses this file to You under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

package com.baidu.hugegraph.studio.config;

import java.util.List;
import java.util.Map;

public class NodeColorOption {

    private final List<Map<String, String>> colors;
    private int nextOption;

    public NodeColorOption(List<Map<String, String>> colors) {
        if (colors.size() < 1) {
            throw new RuntimeException("Invalid color option.");
        }
        this.colors = colors;
        this.nextOption = 0;
    }

    public Map<String, String> getColor() {
        Map<String, String> color = colors.get(this.nextOption);
        this.nextOption = ++this.nextOption % colors.size();
        return color;
    }
}
